Retaining Ring External 1.2 mm Thk PK50 System of Measurement Metric Location Style External Thickness 1.2 mm Fits Shaft Diameter 23 mm For Bore Diameter Not Applicable Fits Groove Diameter 22 mm Fits Groove Width 1.3 mm Free Inside Diameter 21.5 mm Clearance Diameter 31 mm Material Steel Finish Plain Material Grade/Class Ungraded Ring Type External Retaining Ring Clearance Diameter Type Expanded Material Quality Standards DIN 471 Pack Size Small Pack